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# Why do you need to keep variables the same?

Updated: 9/18/2023

Wiki User

13y ago

In programming, variables change all the time. In scientific testing you control variables to determine what other changes occur.

Wiki User

13y ago

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Q: Why do you need to keep variables the same?
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### How do you describe variables in an experiment operationally?

Variables work by telling you what you need to change, what to observe, and what to keep the same in a experiment.

### If you were doing an experiment to determine the effects of x ray on seed germination what variables woild you need to keep the same for all test groups?

If you were doing an experiment to determine the effects of x ray on seed germination what variables woild you need to keep the same for all test groups?

### What is the scientific word for what you keep the same?

The control variables.

### Why would a scientists need to identify and control variables in an experiment?

A scientist would need to identify variables so you could know what to change and what to keep the same. A scientist would need to control variables so you can try to see exactly which factors are affecting the dependent variable (the thing you're measuring). Hope this helped! Because I have the exact same question on my homework!

### Why do you need to keep all other conditions the same between an independent variable and a dependent variable in an experiment?

So no other variables influence your results.

### How do you use variable in an addition or subtraction?

well, if you want to add apples to bananas you can't do that it's the same with variables, the coefficients can be different but to add and subtract the variables have to be the same for ex: you can't do 4x+3y because they have different variables you can do 4x+3x because they have the same variables all you do is add the coefficients and keep the variable so you would get 7x

### What is a cotrolled experiment?

It means that except for the independent variable (the only factor that you change) you remain the other variables constant. To keep the control variables the same. Then this is a controlled experiment (fair test). Hope this helps :)

### When is better to use global variables rather than utilizing local variables in a program?

In my opinion it is rarely a good idea to use global variables, unless you need to refer to them across modules, or their values need to be keep for a long period of program execution. Local variables should always be used when their lifetime is short, usually only in the module they are declared in. Global variables lifetime will be for the length of the program execution.

### Is scientists keep all variables constant true or false?

independent variable

### Is x and y like terms?

No. For purposes of combining "like terms", you need terms that have exactly the same variables, with the same exponents (if there are any).

### What does Variables mean for a science project?

A variable means that something that you can change, measure, or keep the same. Example: Responding variable: The variable you can measure. Controlled variable: The variable you keep the same. Manipulated variable: The variable that you change.

like terms